Haiku 5.5 is a big intelligence jump, but Luna High still wins on capability-per-cost
haider1 · x · 2026-10-09
The author compares the current model lineup: Haiku 5.5 is a clear leap over 4.5 in both intelligence and efficiency, yet he still picks Luna High for everyday workloads thanks to its unmatched capability-to-cost ratio. He also notes GPT-6 Sol feels like a regression from 5.6 Luna, and wonders why OpenAI hasn't shipped 6.1 Luna yet.
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